80282221 has 2 divisors, whose sum is σ = 80282222. Its totient is φ = 80282220.

The previous prime is 80282159. The next prime is 80282233. The reversal of 80282221 is 12228208.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40780996 + 39501225 = 6386^2 + 6285^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80282221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80232221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40141110 + 40141111.

It is an arithmetic number, because the mean of its divisors is an integer number (40141111).

Almost surely, 2^80282221 is an apocalyptic number.

It is an amenable number.

80282221 is a deficient number, since it is larger than the sum of its proper divisors (1).

80282221 is an equidigital number, since it uses as much as digits as its factorization.

80282221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1024, while the sum is 25.

The square root of 80282221 is about 8960.0346539508. The cubic root of 80282221 is about 431.3930322725.

The spelling of 80282221 in words is "eighty million, two hundred eighty-two thousand, two hundred twenty-one".